642-892 認證考試經歷----CCNP
考試終于結束了，不枉費我這幾個月的努力，現在終于可以輕松一段時間，接下來就是據繼續攻克CCIE，接下來分享一下我的考試盡力吧，希望對正在努力中的朋友們一點幫助。
考試教材我選用的是人民郵電出版社出版的CCNP學習叢書，但是這套書只有《構建可擴展的cisco網絡》、《構建遠程訪問網絡》和《構建cisco多層交換網絡》三本書，這幾本書是嚴格按照Cisco官方培訓的英文教材翻譯的，而且翻譯的質量不錯，至少比微軟的中文教材強，呵呵。考試中的內容幾乎都可以在書中找到影子，因此對想要考CCNP的朋友們來講，這套書為必備用書。可是這套書缺少另外一門ccnp必考課目《Cisco互聯網絡排錯》，沒辦法，我就選了一本電子工業出版社影印SYBEX公司Support考試指南，（其實ccnp中的support和互聯網絡排錯是一樣的）不過這本書是英文版的，因為我通過ccna時就是選的電子工業出版社影印SYBEX公司的ccna考試指南，感覺對學習很有幫助。但是不知道人郵出版社為什么不出版《Cisco互聯網絡排錯》，希望能夠早日出版，讓我們沒必要去抱著英文書籍狂啃了。
因為工作關系，每次讀書時間不是很固定，但是我建議大家最好每天至少抽出1－2個小時的時間來看書。記住要堅持，我也許比較笨的原因吧，如果隔兩天看一次的話，發現以前看過的內容有時候記不起來了。還有一個就英文問題，其實這種考試沒有語法問題，關鍵是單詞，尤其是某些術語，這就要讀英文教材來幫助了，另外通過考試模擬題也能幫助大家克服英文恐懼癥。
考試模擬題我選擇的肯定是大名鼎鼎的boson模擬題，boson模擬題是一個不錯的選擇，我感覺boson的模擬題和ccnp考試題目比較接近，甚至有些題難度好像還要超過我考試中碰到的題目。做模擬題的關鍵是為了能夠找到我們在看書中過程遺漏的知識點，因為ccnp考試的題目出的很細，內容肯定包括所有的知識。我們讀書不可能做到一絲不露的，所以模擬題一定要做。在我的了解中，做boson模擬題的人通過率是很高的。
在這個之外呢，為了能讓自己更有把握一次通過考試，我還看了testinside 642-892的題庫，第一他們網站的題質量確實很好，在很多論壇上都有他們的考題分享，大家不妨也看看，另外軟件版本做的非常不錯，我推薦一下大家可以使用一下。這個在網站上也都是可以找到的。
下面跟大家分享一下Testinside642-892 V3.29 考題分享，考試過程中驚奇的發現，考題基本上全部都覆蓋到了，就差了兩題是不一樣的。
1. When an attacker is using switch spoofing to perform VLAN hopping, how is the attacker able to gather information?
A. The attacking station uses DTP to negotiate trunking with a switch port and captures all traffic that is allowed on the trunk
B. The attacking station tags itself with all usable VLANs to capture data that is passed through the switch,regardless of the VLAN to which the data belongs.
C. The attacking station will generate frames with two 802.1Q headers to cause the switch to forward the frames to a VLAN that would be inaccessible to the attacker through legitimate means.
D. The attacking station uses VTP to collect VLAN information that is sent and then tags itself with the domain information in order to capture the data.
Answer: A
2. Which statement is true about the Lightweight Access Point Protocol (LWAPP)?
A. The control traffic between the client and the access point is encapsulated with the LWAPP.
B. Data traffic between the client and the access point is encapsulated with LWAPP.
C. Authentication, security, and mobility are handled by the access point.
D. Realtime frame exchange is accomplished within the access point.
Answer: D
3. Refer to the exhibit. Based upon the information that is given, how will voice traffic from the phone and data traffic from the PC be handled by SW_1?
A. The switch port will trust the CoS value of the ingress voice and data traffic that comes into the switch port.
B. The switch port will perform marking for the ingress voice and data traffic by using the default CoS value at the switch port.
C. The switch port will trust the CoS value of the ingress voice traffic. Data traffic will be marked at the switch port with the default CoS value.
D. The switch port will trust the CoS value of the ingress data traffic. Voice traffic will be marked at the switch port with the default CoS value.
Answer: A
4. How is the designated querier elected in IGMPv2?
A. The first router to appear on a subnet is designated.
B. The host that responds first to the election query is designated.
C. The router with the lowest IP address on a subnet is designated.
D. The host with the lowest MAC address on a segment is designated.
Answer: C
5. Which type of IGMP message is sent when a network client wants to join a multicast group?
A. host membership query
B. host membership report
C. host membership status
D. host membership notification
Answer: B
講了這么多考試的事情，還要說一點考試固然重要但是最重要的還是實戰技術，我們大家考這些證書就是為了找到一份好的工作。現在用人單位招聘首先就要看證書，沒有證書談都不用談，哎~~ 也許有些人會說，我沒有證書也一樣混的很好，
這些話肯定是資格很老的前輩們講的，但是作為像我這樣踏入這個圈子沒多久的新手來說，證書還是比較有用的。
希望拙文對準備考CCNP的考友們有所幫助，呵呵！
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